66560630 has 16 divisors (see below), whose sum is σ = 122732064. Its totient is φ = 25974720.

The previous prime is 66560617. The next prime is 66560639. The reversal of 66560630 is 3606566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66560639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80762 + ... + 81581.

It is an arithmetic number, because the mean of its divisors is an integer number (7670754).

Almost surely, 2^66560630 is an apocalyptic number.

66560630 is a deficient number, since it is larger than the sum of its proper divisors (56171434).

66560630 is a wasteful number, since it uses less digits than its factorization.

66560630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162391.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 66560630 is about 8158.4698320212. The cubic root of 66560630 is about 405.2650401507.

The spelling of 66560630 in words is "sixty-six million, five hundred sixty thousand, six hundred thirty".